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E90/E91/E92/E93 (2006 - 2013) The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

I just went to install my winter tire/wheel that I purchased from tire rack..bought sport edition A7 black 17" with Bridgestone blizzak...but the technician couldn't install them due to hub diameter issues. Has anyone had such issues? I confirmed this with tire rack sales associate before purchasing them! Any recommendations?

you may have a hubcentric ring still stuck on the hub if you run aftermarket.
they should fit-- the A7 for BMW comes with the correct centerbore and takes stock lugs and caps. all bmws aside from two models use the same centerbore for the past 15+ years